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5AHP4A

Five-inch P4 cathode-ray display tube with electrostatic focusing and magnetic deflection, using an aluminized screen for visual or instrument display.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: B14A
Base pins: 8
Nominal heater: 6.3 V / 600 mA

Description

The Sylvania 5AHP4A is a 5-inch high-resolution CRT with electrostatic focus, magnetic deflection, and a white screen.

Socket description

Large readout/Nixie 14-contact base, 44.5 mm pin circle

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B14A
Base pins: 8
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Cathode Ray

X-ray radiationInterelectrode capacitances

Max plate voltage: 4 V

High-definition CRT section.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1950 Sylvania

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristic

Heater Voltage . . . .« . .+ . . . . 63Volts
63 V
Heater Voltage . . . .« . .+ . . . . 63Volts
Heater Current (Approx ) . . . . ..0.6 Amperc
600 mA
Heater Current (Approx ) . . . . ..0.6 Amperc
Anode Voltage . . 11,000 Volts dc
11 V
Anode Voltage . . 11,000 Volts dc
Voltage . . . . -550 to +1100 Volts dc
1100 V
Voltage . . . . -550 to +1100 Volts dc
Grid No. 1 Voltage
1 V
Grid No. 1 Voltage
Anode Voltage! . . 7,000 Volts dc
7 V
Anode Voltage! . . 7,000 Volts dc
Grid No. 4 Voltage for Focus? . 0 to +250 Volts dc
250 V
Grid No. 4 Voltage for Focus? . 0 to +250 Volts dc
Grid No. 2 Voltage . . 300 Volts dc
300 V
Grid No. 2 Voltage . . 300 Volts dc
Grid No. 1 Voltage? . =33 to =77 Volts dc
77 V
Grid No. 1 Voltage? . =33 to =77 Volts dc
voltage should not be less than 4,000 volts. SENECA FALLS, NEW YORK
4 V
voltage should not be less than 4,000 volts. SENECA FALLS, NEW YORK
Voltage or 16,000 volts, whichever is less.
16 V
Voltage or 16,000 volts, whichever is less.

Data set 02

1958 Compagnie General

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Deflection Method
Electromagnetic text
Focusing Method
Electrostatic text
Screen Construction
Aluminized text
Phosphor
P4 text

Data set 03

1965 Sylvania Electronic Tubes Vol3

Published operating points and test conditions from this source.

SECTION 1

Cathode Ray

Characteristics

Heater Voltage
6.3 V
Heater Current
600 mA
Focusing Method
Electrostatic text
Deflection Method
Magnetic text
Deflection Angle
53 deg
Approximate
Fluorescence
White text
Persistence
Short to Medium text
Cathode-to-All Capacitance
5 pF
Approximate
Grid1-to-All Capacitance
6 pF
Approximate
Screen Aluminized
Yes text

Other

Maximum Anode Voltage
11000 V
Maximum Focus Electrode Voltage
-550 V
NegativeLimit
Maximum Focus Electrode Voltage
1100 V
PositiveLimit
Maximum Grid2 Voltage
770 V
Maximum Grid1 Negative Bias
200 V
Maximum Heater-Cathode Voltage
200 V
EitherPolarity
Typical Anode Voltage
7000 V
Focus Voltage Minimum
0 V
Grid4
Focus Voltage Maximum
250 V
Grid4
Typical Grid2 Voltage
300 V
Grid1 Cutoff Voltage Minimum
-77 V
Grid1 Cutoff Voltage Maximum
-33 V
Maximum Line Width
0.4 mm
Maximum Grid1 Circuit Resistance
1.5 Mohm